Philippines Department of Tourism Bureau of Special Services & Philippines. (1992). Rules and regulations governing the accreditation of tourism-related establishments. Bureau of Special Services, Department of Tourism.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippines Department of Tourism Bureau of Special Services و Philippines. Rules and Regulations Governing the Accreditation of Tourism-related Establishments. [Manila]: Bureau of Special Services, Department of Tourism, 1992.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippines Department of Tourism Bureau of Special Services و Philippines. Rules and Regulations Governing the Accreditation of Tourism-related Establishments. Bureau of Special Services, Department of Tourism, 1992.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.